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Method and device for processing echo signal of guided wave radar liquid level gauge

A technology of echo signal and guided wave radar, applied in the direction of measuring device, lubrication indicating device, liquid level indicator, etc. The liquid level measurement is stable, the anti-interference ability is improved, and the user experience is good.

Active Publication Date: 2017-08-22
SHENZHEN MAXONIC AUTOMATION CONTROL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the defects and deficiencies of increasing the power of the emitted electromagnetic wave signal or changing the structure of the probe, the invention solves the problem that the guided wave radar level gauge cannot detect when the echo signal is weak in low dielectric constant or large-range applications and reduces the measurement stability. And the problem of reliability and limited application range

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  • Method and device for processing echo signal of guided wave radar liquid level gauge
  • Method and device for processing echo signal of guided wave radar liquid level gauge
  • Method and device for processing echo signal of guided wave radar liquid level gauge

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Embodiment 1

[0074] A guided wave radar level gauge echo signal processing device, including a microprocessor, a control circuit, a pulse transmitting circuit, an echo receiving circuit, a signal processing circuit, and an A / D conversion circuit. The processing circuit and the A / D conversion circuit send control signals, and the control circuit controls the pulse transmitting circuit and the echo receiving circuit. The echo receiving circuit directly feeds back the collected echo signals to the microprocessor or the signal processing circuit to the microprocessor The signal processing circuit is composed of a base adjustment circuit, a gain adjustment circuit, and a filter circuit that are sequentially connected according to the transmission direction of the echo signal. The base adjustment circuit adjusts the return signal by superimposing a DC bias on the echo signal. The base level of the wave signal, the gain adjustment circuit is used to extract and amplify the echo signal passing throu...

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Abstract

The invention relates to a method and a device for processing echo signals of a guided wave radar liquid level meter. The method includes a benchmark leveling adjusting step, an amplification factor adjusting step and a clutter removing step. The device comprises a microprocessor, a control circuit, a pulse transmitting circuit, an echo receiving circuit, a signal processing circuit and an A / D (analog / digital) conversion circuit. The method and the device have the advantage that problems of incapability of detecting weak echo signals, degradation of measurement stability and reliability and limited application ranges when guided wave radar liquid level meters are applied under the conditions of low dielectric constants or wide measuring ranges can be solved.

Description

Technical field [0001] The invention belongs to the technical field of radar liquid level measurement, and specifically relates to an intelligent processing method for echo signals and a guided wave radar liquid level gauge adopting the method. Background technique [0002] In recent years, due to the wide range of applications and high measurement accuracy, the technical category of radar has a rapid growth in material / liquid level instruments. With the price drop of radar-type instruments and technological upgrades, radar has become the most important material / level instrument. One of the types of liquid level measurement technology, especially in traditional industrial fields such as metallurgy, building materials (cement), petroleum, chemical industry, etc., occupies an increasingly important position. It will replace other types of meters and become a material / liquid level meter. Industry mainstream products. [0003] Guided wave radar level gauge is a new level measurement t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/284
Inventor 谭运刚谢晓辉贺婷
Owner SHENZHEN MAXONIC AUTOMATION CONTROL CO LTD
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