Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for fill level measurement using the travel time principle

A technology of filling level and travel time, applied in the direction of measuring device, liquid/fluid solid measurement, engine lubrication, etc., can solve problems such as large measurement error

Active Publication Date: 2018-04-24
ENDRESS & HAUSER GMBH & CO KG
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] If the previous table is to continue to be used unchanged, it may lead to considerable measurement errors in a given situation depending on the type of change in measurement conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for fill level measurement using the travel time principle
  • Method for fill level measurement using the travel time principle
  • Method for fill level measurement using the travel time principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] figure 1 An example of an arrangement for fill level measurement to which the method of the invention is applicable is shown. The arrangement comprises a container 3 filled with a filling substance 1 on which a filling substance measuring device 5 operating according to the travel time principle is arranged. Suitable fill-level measuring devices 5 are, for example, microwave-operating fill-level measuring devices or ultrasonic-operating fill-level measuring devices. The fill level measuring device 5 serves to measure the fill level L of the fill substance 1 in the container. For example, a disturbance 9 is introduced in the container 3 . Disturbances 9 can be eg objects installed in container 3, stirring mechanisms and of course any other structure on which reflections can occur. Here only a single disturbance 9 is provided for easier understanding and clarity. Of course, in actual measurement situations, there may be many disturbances.

[0079] For example, the fi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for measuring the fill level (L) of a filling substance (1) in a container (3) with a fill level measuring device (5) operating according to the travel time principle, wherein the fill level measuring device moves towards the container ( The filling substance (1) in 3) sends a transmission signal (S) and based on the signal portion (E) of the transmission signal reflected back in the container (3) results in an echo function (A(t)), which echo function (A(t)) gives by means of a table the amplitude (A) of the signal portion (E) as a function of its travel time (t). The rows of the table correspond to discrete fill levels (L) and the columns of the table correspond to discrete travel times (t). And in the table, in this row whose row index corresponds to the relevant filling level (L), store as historical measurement point from the echo function (A(t)) obtained in the past Information on the travel time (t) of the maximum value of the echo function of the reflection on the reflector in (3). The method also delivers reliable measuring results when the measuring conditions at the point of use of the fill level measuring device ( 5 ) can vary. This is achieved by the fact that the table is continuously updated based on the current echo function (A(t)) derived during the ongoing measurement operation, wherein the current measurement point derived from the current echo function (A(t)) Stored in the row whose row index corresponds to the associated fill level determined by the fill level measuring means. A plausibility check is performed based on the historical and current measurement points, and due to the plausibility check the historical measurement points are identified as not plausible and / or the current measurement points are deleted and all remaining current measurement points are brought into the table as historical measurement points middle.

Description

technical field [0001] The invention relates to a method for measuring the fill level of a filling substance in a container with a fill level measuring device operating according to the travel time principle. In measuring operation, the fill level measuring device sends a transmission signal towards the filling substance in the container and, based on the part of their signal reflected back in the container, derives an echo function which by means of its lines corresponds to the discrete filling Auxiliary of a table with levels and whose columns correspond to discrete travel times gives the amplitudes of the signal components as a function of their travel times, and where in each case as historical measurement points in whose rows the indices correspond to the associated fill levels Information about the travel times of the echo function maxima attributable to reflections on reflectors located in the container, which is derived from echo functions determined in the past, is st...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/284G01F23/296G01F25/00
CPCG01F23/2962G01F23/284G01F25/20
Inventor 斯特凡·格伦弗洛阿列克谢·马利诺夫斯基
Owner ENDRESS & HAUSER GMBH & CO KG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com