Supercharge Your Innovation With Domain-Expert AI Agents!

Fmcw based guided wave radar level gauge

一种雷达物位计、调频连续波的技术，应用在电磁波的再辐射、无线电波的反射/再辐射、发动机的润滑等方向，达到电力耗用降低、部件成本降低的效果

Active Publication Date: 2016-07-06
ROSEMOUNT TANK RADAR
View PDF10 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in very accurate FMCW systems, points that are known to be severely mismatched are the source of the problem

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
  • Fmcw based guided wave radar level gauge
  • Fmcw based guided wave radar level gauge
  • Fmcw based guided wave radar level gauge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] figure 1 A level gauging system 1 is schematically shown comprising a radar level gauge 2 and a host system 3 shown as a control room. Here the radar level gauge 2 is mounted on a tubular mounting structure 4 (commonly called a "nozzle") extending substantially vertically from the top of a tank 5 . The tank 5 can be any container or vessel capable of holding the item to be measured. Usually the nozzle 4 is an existing part on the tank and was not originally intended for a particular type of level gauge. The nozzle 4 may therefore have characteristics which are not ideal for this purpose. The radar level gauge can of course also be installed on tanks without any nozzles.

[0041] A radar level gauge 2 is installed to measure the fill level of the items 6 contained in the tank 5 by detecting the distance to the upper surface 7 of the items 6 . The distance to a lower interface such as the interface between oil and water below the oil can also be detected. The radar ...

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

FMCW-type radar level gauge for determining the distance to the surface of a product in a tank comprising a transceiver to emit an electromagnetic transmit-signal and to receive an electromagnetic return-signal reflected by the surface, the electromagnetic transmit-signal having a bandwidth of at least 1 GHz, a relative bandwidth (max frequency / min frequency) of less than 2.5 and an upper frequency-limit smaller than 4 GHz. The gauge comprises a single conductor probe mechanically suspended and extending into the product in the tank, and a matching arrangement providing an electrically-matched connection between a sealed electrical feed-through and the single conductor probe. The relatively expensive still-pipe of the prior-art is here replaced with a relatively inexpensive single conductor probe acting as a surface wave-guide (SWG).

Description

technical field [0001] The invention relates to a radar level gauge of the FMCW type for determining the distance to the surface of an item in a tank. Background technique [0002] Radar level gauging of tanks containing eg liquids, gases or granular goods has been used for decades and several different technical solutions are in use. For signal generation and signal processing, a method known as FMCW (Frequency Modulated Continuous Wave) has been widely used especially where measurement accuracy is a critical specification point. In most FMCW systems, a transmit signal of substantially equal amplitude and linearly varying frequency is transmitted into the tank and reflected by surfaces. The reflected signal is received and mixed with the transmitted signal to form an intermediate frequency signal, where the intermediate frequency (IF) corresponds to the distance from the transmitter / receiver to the reflection point (usually the surface of the item in the tank). Substituti...

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 Applications(China)
IPC IPC(8): G01F23/284G01S13/32
CPCG01S13/88H01Q1/225G01S7/003G01S13/0209G01S13/34G01F23/284G01S7/02G01S13/02G01R13/08G01S17/02H01Q1/22
Inventor 奥洛夫·爱德华松
Owner ROSEMOUNT TANK RADAR
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com