The invention discloses a fuel oil density sensor and a fuel oil density measuring method. The fuel oil density sensor comprises a density measuring circuit and a density assembly, according to the resonance period T and the fixed density coefficients K0 and K2 of the fuel oil, the real-time fuel oil density rho is obtained through calculation; the processing unit is used for sequentially screening the obtained square wave signals of the resonant frequency to obtain frequency signals of which the resonant period is between preset values, calculating to obtain a first frequency average value after obtaining n times of frequency signals, and obtaining n-1 times of frequency signals again to obtain a second frequency average value; calculating the obtained (n-1) times of frequency signals and the first frequency average value to obtain a second frequency average value, sequentially circulating, calculating the frequency average value of the (n-1) times of frequency signals obtained again and the frequency average value obtained by the previous calculation within the preset output time, and outputting the frequency average value obtained after the preset output time, and a resonance period T is obtained according to the output frequency average value. According to the invention, the problem of low measurement precision of the aircraft fuel oil density is solved, and the measurement precision of the fuel oil density is improved.

    本发明公开了一种燃油密度传感器及燃油密度测量方法,包括:密度测量电路和密度组件;根据谐振周期T和燃油的固定密度系数K0、K2计算获得实时的燃油密度ρ;处理单元依次对获取的谐振频率方波信号进行筛选获得谐振周期在预设值之间的频率信号,获取n次频率信号后计算得到第一次频率平均值,再次获取n‑1次频率信号后,计算获取的n‑1次频率信号与第一次频率平均值得到第二次频率平均值,依次循环,在预设输出时间内,计算再次获取的n‑1次频率信号与前一次计算得到的频率平均值的频率平均值,输出在经过预设输出时间后所得到的频率平均值,并根据输出的频率平均值获得谐振周期T。本发明解决了飞机燃油密度测量精度低的问题,提高了燃油密度测量精度。


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    Titel :

    Fuel oil density sensor and fuel oil density measuring method


    Weitere Titelangaben:

    一种燃油密度传感器及燃油密度测量方法


    Beteiligte:
    XI HAIRUI (Autor:in) / DU XINKUN (Autor:in) / CHEN QING (Autor:in) / YANG DONG (Autor:in) / WANG YANG (Autor:in)

    Erscheinungsdatum :

    18.03.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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