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Ultrasonic test system of gas concentration

A technology of ultrasonic detection and gas concentration, which is applied in the direction of analyzing fluid, analyzing materials, instruments, etc. by using sound wave/ultrasonic wave/infrasonic wave, so as to achieve the effect of simplifying the circuit structure, eliminating interference and reducing power consumption

Inactive Publication Date: 2018-09-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ultrasonic detection technology is a detection technology with low cost, long life, low power consumption, fast response speed and wide measurement range, but there are few applications in the detection of gas concentration in the existing technology

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  • Ultrasonic test system of gas concentration
  • Ultrasonic test system of gas concentration
  • Ultrasonic test system of gas concentration

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Embodiment Construction

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Unless otherwise defined, the technical terms or scientif...

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Abstract

The invention provides an ultrasonic test system of gas concentration, comprising a field programmable gate array, a digital selector circuit, an ultrasonic transmitting circuit, a power module, an ultrasonic transducer, an ultrasonic receiving circuit, an amplifying filter circuit, an A / D (analog / digital) conversion circuit, a USB (universal serial bus) interface and a PC (personal computer). Thecircuit structure is greatly simplified; system composition cost is lowered at the premise of saving space; mutual interference is eliminated; ultrasonic echo, accompanying clutter, interfering pulseand other environmental noises are effectively filtered, and data acquisition speed and precision are increased.

Description

technical field [0001] The invention relates to the field of gas detection, in particular to a gas concentration ultrasonic detection system. Background technique [0002] With the development and progress of society, the public's demand for gas detection is becoming stronger and stronger. At present, technologies capable of real-time detection of gas composition and concentration can be roughly divided into two categories. One is to detect the concentration of a certain gas from an unknown background gas, which is often used: gas chemistry, semiconductor sensors, gas chromatography and gas optics methods; the other is to detect the concentration of a certain gas from a known background gas, which is often used : Methods such as gas thermal conductivity, gas density and gas dielectric constant. However, all kinds of detection methods in the prior art have the following defects. Gas chromatography and gas optics technology are costly, time-consuming to analyze and complex t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/02
CPCG01N29/02G01N2291/021G01N2291/0215
Inventor 赵清周琬婷刘石
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)