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

MFPW radar level gauging with distance approximation

A distance and pulse technology, applied in the field of radar level gauge, can solve the problems that FMCW system is not suitable for power and high power consumption

Active Publication Date: 2013-04-03
ROSEMOUNT TANK RADAR
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the accuracy of current FMCW systems is high, their power consumption is high, which makes FMCW systems less suitable for power-constrained applications

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
  • MFPW radar level gauging with distance approximation
  • MFPW radar level gauging with distance approximation
  • MFPW radar level gauging with distance approximation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] In this specification, embodiments of the invention are described primarily with reference to a radar level gauge system having a free-propagating antenna for radiating and capturing electromagnetic signals. It should be noted that this in no way limits the scope of the invention, which is equally applicable to other signal propagation devices, including other free-propagating antennas (such as rod antennas, patch antennas, fixed or movable parabolic or conical antennas) and Waveguides (eg stationary tubes, transmission lines or probes such as single-wire probes (including so-called Goubau probes), dual-wire probes or coaxial probes).

[0025] figure 2 A radar level gauge system 1 according to an embodiment of the present invention is schematically shown, the radar level gauge system 1 comprising a measurement electronics unit 2 and a signal propagation device, here a horn antenna 3 . The radar level gauge system 1 is arranged on a tank 5 partially filled with a produ...

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 MFPW radar level gauging with a distance approximation. The level gauging includes an approxiamtion of a distance to the surface of a product kept in a tank. The approxiamtion is determined by relating an amplitude of a first harmonic of an IF signal with an amplitude of a second harmonic of the IF signal. Basically, each harmonics represents a given distance range. By determining the received power in two or more harmonics, and correlating them to each other, the distance may be estimated. Depending on modulation and other parameters the distance dependence may be very different, and may be selected to suit the application.

Description

technical field [0001] The invention relates to a radar level gauge that uses electromagnetic waves to determine the distance to the surface of a product in a tank. Background technique [0002] Since the development of radar level gauging as a commodity in the 1970s and 1980s, frequency modulated continuous wave (FMCW) has become the main measurement principle for high precision applications. FMCW measurements consist of emitting a signal into the tank that is swept in a frequency range of the order of a few GHz. For example, the signal may be in the range of 25-27GHz or 9.5-11GHz. The emitted signal is reflected by the surface of the tank contents (or by any other impedance transition) and the echo signal delayed by a certain time returns to the level gauge. The echo signal is mixed with the transmit signal to produce a mixed signal whose frequency is equal to the change in frequency of the transmit signal during the time delay. Because of the linear frequency sweep, th...

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): G01F23/284
CPCG01F23/284G01S13/26G01S13/88G01S13/02
Inventor 奥洛夫·爱德华松安德斯·伊尔斯科格
Owner ROSEMOUNT TANK RADAR
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