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    • 8. 发明申请
    • PROCESS FOR MEASURING A LIQUID LEVEL IN A TANK AND ASSOCIATED SYSTEM
    • 在罐和相关系统中测量液位的方法
    • WO2008049913A1
    • 2008-05-02
    • PCT/EP2007/061517
    • 2007-10-26
    • INERGY AUTOMOTIVE SYSTEMS RESEARCH (Société Anonyme)NAYDENOV, Volodia
    • NAYDENOV, Volodia
    • G01F23/26
    • G01F23/268
    • Process for measuring a liquid level in a tank and associated system Process for measuring a liquid level in a tank that consists in: positioning, in the tank, two reference capacitors that are substantially identical and two measurement capacitors that are also substantially identical in such a way that, when the tank is full, the 4 capacitors are submerged and that, when the liquid level in the tank falls, a measurement capacitor/ reference capacitor pair ( Cmeas 2, Cref 2) emerges before another pair of capacitors ( Cmeas 1, Cref 1); when the 4 capacitors Cmeas 1, Cref 1, Cmeas 2, Cref 2 are in air, measuring the 4 capacitors in air; and when at least one capacitor is at least partly immersed in the liquid, measuring the value of said capacitor, measuring the values of the other capacitors and calculating the liquid level in the tank from the measured value of the capacitor partly immersed in the liquid, the value in air measured previously of the capacitor partly immersed in the liquid and the measured values of the other capacitors. The invention also relates to a system for measuring a liquid level in a tank suitable for said process.
    • 用于测量罐和相关系统中的液位的过程用于测量罐中的液面的方法,该方法包括:在罐中定位两个基本相同的参考电容器,以及两个这样的测量电容器基本相同的测量电容器 当储罐满时,4个电容器被浸没,并且当液位下降时,测量电容/参考电容器对(Cmeas2,Cref2)出现在另一对电容器(Cmeas1,Cref1)之前; 当四个电容器Cmeas1,Cref1,Cmeas2,Cref2在空气中时,测量空气中的4个电容器; 并且当至少一个电容器至少部分地浸没在液体中时,测量所述电容器的值,测量其它电容器的值,并从部分浸没在液体中的电容器的测量值计算罐中的液位, 先前测量的电容器部分浸入液体中的值和其他电容器的测量值。 本发明还涉及一种用于测量适于所述方法的罐中的液位的系统。
    • 9. 发明申请
    • CAPACITIVE GAUGE FOR FUEL TANK
    • 燃油舱容量计
    • WO2007048829A1
    • 2007-05-03
    • PCT/EP2006/067834
    • 2006-10-26
    • INERGY AUTOMOTIVE SYSTEMS RESEARCH (Société Anonyme)NAYDENOV, Volodia
    • NAYDENOV, Volodia
    • G01F23/26
    • G01F23/266
    • Capacitive gauge for fuel tank comprising a measurement capacitor, a reference capacitor and at least one standard capacitive device, fed by and connected to an electronic interpretation circuit comprising switches for charging and discharging the capacitors and the capacitive device at a certain frequency; an integrator to which the charges of the measurement or reference capacitor can be transmitted and accumulated before being discharged into the standard capacitive device; a comparator for comparing an output value of the integrator with a threshold value; a counter; and a processor or computation unit for calculating the level of liquid in a fuel tank according to the equation: h = [n ref,empty /(n ref -n ref,empty )] . [(n meas -n meas,empty )/n meas,empty ], where n are the values read by the counter respectively for the capacitance of the reference capacitor when empty (n ref,empty ), for the capacitance of the reference capacitor immersed in the fuel (n ref ), for the capacitance of the measurement capacitor when empty (n meas,empty ) and for the capacitance of the measurement capacitor in the liquid to be measured (n meas ); the standard capacitive device comprising at least two standard capacitors with electrical connections to the measurement capacitor.
    • 用于燃料箱的电容计包括测量电容器,参考电容器和至少一个标准电容器件,由电子解释电路馈送并连接到电子解释电路,包括用于以特定频率对电容器和电容器件进行充电和放电的开关; 在放电到标准电容器件之前可以将测量或参考电容器的电荷传输和累积的积分器; 比较器,用于将积分器的输出值与阈值进行比较; 柜台 以及用于根据以下等式计算燃料箱中的液体液位的处理器或计算单元:h = [n< ref< / SUB>< SUB& > ref,empty )]。 其中,n分别为计数器读取的值, 对于浸没在燃料中的参考电容器的电容(n ),对于测量电容,参考电容器的空闲时间(n ,空)的电容 电容器为空(n meas,空)和待测液体中测量电容器的电容(n ); 所述标准电容器件包括至少两个具有与所述测量电容器的电连接的标准电容器。