Distributed parameter sensing method based on acoustic surface wave sensors

Distributed parameter sensing method based on acoustic surface wave sensors

  • CN 106,656,097 A
  • Filed: 12/30/2016
  • Published: 05/10/2017
  • Est. Priority Date: 12/30/2016
  • Status: Active Application
First Claim
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1. a kind of distributed parameter method for sensing based on surface acoustic wave sensing element, it is characterised in that including following sensing stepSuddenly:

  • 1)

    Select several sensing points in distributed parametric system to be sensed, the position of the sensing points and number are according to waiting to feelThe sensing requirement of the characteristics of surveying distributed parametric system and distributed parameter determines;

    2)

    In selected sensing points, sensing unit is set(

    1)

    , the sensing unit(

    1)

    By surface acoustic wave sensing element(

    11)

    WithNumber selects high-frequency switch circuit(

    12)

    It is composed in series;

    3)

    It is connected in parallel each sensing unit(

    1)

    , each sensing unit(

    1)

    Input be collected to high-frequency signal input port(

    2)

    , each sensing unit(

    1)

    Output end be collected to high-frequency signal output port(

    3)

    , the high-frequency signal input port(

    2)

    Connect high-frequency signal source (6), the high-frequency signal output port(

    3)

    Connect high frequency signal properties measuring instrument (7), each sensing unit(

    1)

    Number select high-frequency switch circuit gating end (121) be collected to sensing unit identification code decoding circuit(

    5)

    Decoding output end(52);

    4)

    From sensing unit identification code decoding circuit(

    5)

    Identification code input(

    51)

    Sequentially input each sensing unit identificationCode, Jing sensing unit identification code decoding circuits(

    5)

    Decoding, by the corresponding number of gating high-frequency switch circuit is selected(

    12)

    And gate eachIndividual sensing unit(

    1)



    5)

    By high-frequency signal source(

    6)

    From high-frequency signal input port(

    2)

    To the sensing unit for being gated(

    1)

    Apply high-frequency signal;

    6)

    By high frequency signal properties measuring instrument(

    7)

    From high-frequency signal output port(

    3)

    Measurement gates sensing unit(

    1)

    OutputThe parameter and its variable quantity of high-frequency signal;

    7)

    By each sensing unit of measurement gained(

    1)

    The parameter value of the high-frequency signal of output and its variable quantity determine that what is sensed dividesThe value of consult volume and its distribution situation of cloth parametric system and situation of change.

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