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    • 1. 发明申请
    • CAPACITIVE GAUGE
    • 电容量规
    • WO2007048777A1
    • 2007-05-03
    • PCT/EP2006/067689
    • 2006-10-24
    • INERGY AUTOMOTIVE SYSTEMS RESEARCH (SOCIETE ANONYME)NAYDENOV, Volodia
    • NAYDENOV, Volodia
    • G01F23/26
    • G01F23/266G01F23/26
    • Capacitive gauge Capacitive gauge comprising a measurement capacitor, a reference capacitor and a standard capacitor, supplied by and connected to an electronic interpretation circuit comprising switches for charging and discharging the capacitors 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 capacitor; 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 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 counter being a timer for measuring the time elapsed between two successive overshoots of the threshold value.
    • 电容式电容器包括测量电容器,参考电容器和标准电容器,由电子解读电路提供并连接到包括用于以特定频率对电容器充电和放电的开关; 积分器,其在测量或参考电容器的电荷在放电到标准电容器之前可以被传输和累积; 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罐中的液体水平的处理器或计算单元:h = [n< ref< /< 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 电容器为空时(n meas,空)和待测液体中的测量电容器的电容(n ),计数器是用于测量 在阈值的两个连续过冲之间经过时间。