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    • 1. 发明申请
    • Salinity measuring apparatus
    • 盐度测量仪
    • US20110316564A1
    • 2011-12-29
    • US13067650
    • 2011-06-16
    • Nam Ju ParkJeong Su HanHyo Sang Lee
    • Nam Ju ParkJeong Su HanHyo Sang Lee
    • G01R27/26
    • G01N27/06G01N27/221G01N27/223G01N33/02G01N33/2852G01R27/02G01R27/22
    • A salinity measuring apparatus to determine salinity of food includes a salinity sensing unit including a pair of measuring electrodes and a capacitor, a switching unit to switch a voltage of the capacitor of the salinity sensing unit, and a control unit to provide a pulse signal with a constant frequency to the switching unit and to determine the salinity of the food which is in contact with the measuring electrodes of the salinity sensing unit based on when the voltage of the capacitor reaches a reference voltage. By providing the pulse signal with the constant frequency to the switching unit, it is possible to minimize the internal impedance variation of the capacitor and to more accurately measure the salinity of the food. Since a period when the voltage of the capacitor is substantially “0” is present, it is possible to minimize accumulation of ions in the measuring electrodes.
    • 用于确定食物盐度的盐度测量装置包括:盐度感测单元,包括一对测量电极和电容器;切换单元,用于切换所述盐度感测单元的电容器的电压;以及控制单元,用于向脉冲信号提供 恒定频率到开关单元,并且基于电容器的电压达到参考电压来确定与盐度感测单元的测量电极接触的食物的盐度。 通过向开关单元提供具有恒定频率的脉冲信号,可以最小化电容器的内部阻抗变化并且更精确地测量食物的盐度。 由于存在电容器的电压基本为“0”的期间,所以能够使测定电极中的离子的累积最小化。
    • 3. 发明授权
    • Salinity measuring apparatus
    • 盐度测量仪
    • US08963564B2
    • 2015-02-24
    • US13067650
    • 2011-06-16
    • Nam Ju ParkJeong Su HanHyo Sang Lee
    • Nam Ju ParkJeong Su HanHyo Sang Lee
    • G01R27/26G01N27/06G01N33/02G01R27/02G01R27/22G01N27/22G01N33/28
    • G01N27/06G01N27/221G01N27/223G01N33/02G01N33/2852G01R27/02G01R27/22
    • A salinity measuring apparatus to determine salinity of food includes a salinity sensing unit including a pair of measuring electrodes and a capacitor, a switching unit to switch a voltage of the capacitor of the salinity sensing unit, and a control unit to provide a pulse signal with a constant frequency to the switching unit and to determine the salinity of the food which is in contact with the measuring electrodes of the salinity sensing unit based on when the voltage of the capacitor reaches a reference voltage. By providing the pulse signal with the constant frequency to the switching unit, it is possible to minimize the internal impedance variation of the capacitor and to more accurately measure the salinity of the food. Since a period when the voltage of the capacitor is substantially “0” is present, it is possible to minimize accumulation of ions in the measuring electrodes.
    • 用于确定食物盐度的盐度测量装置包括:盐度感测单元,包括一对测量电极和电容器;切换单元,用于切换所述盐度感测单元的电容器的电压;以及控制单元,用于向脉冲信号提供 恒定频率到开关单元,并且基于电容器的电压达到参考电压来确定与盐度感测单元的测量电极接触的食物的盐度。 通过向开关单元提供具有恒定频率的脉冲信号,可以最小化电容器的内部阻抗变化并且更精确地测量食物的盐度。 由于存在电容器的电压基本为“0”的期间,所以能够使测定电极中的离子的累积最小化。