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    • 8. 发明申请
    • CAPACITIVE PROXIMITY SENSOR AS WELL AS METHOD FOR CAPACITIVE PROXIMITY DETECTION
    • 电容式接近传感器作为电容式近似检测方法
    • WO2012093124A3
    • 2012-08-30
    • PCT/EP2012050059
    • 2012-01-03
    • IDENT TECHNOLOGY AGERKENS HOLGER
    • ERKENS HOLGER
    • H03K17/955
    • G01R27/2605H03K17/955H03K2017/9613H03K2217/960705H03K2217/96073H03K2217/960745
    • The invention relates to a capacitive proximity sensor, comprising - a first sensor electrodeE1 and a second sensor electrode E2, a signal generator E1,E2 for providing a first and a second electric alternating signal, - a first load element L which comprises a first and a second electric load, in which the first alternating signal by means of the first load can be fed to the first sensor electrode and the second alternating signal by means of the second load to the second sensor electrode, and wherein the electric loads each together with the capacitive load to be measured at the respective sensor electrode form a lowpass filter, and - a signal processing device A which is coupled with the first sensor electrode and with the second sensor electrode, and which is adapted to form a first measurement value from the push-pull portion of a first electric parameter tapped at the first sensor electrode and a second electric parameter tapped at the second sensor electrode. Also a method for the capacitive approximation detection with a capacitive proximity sensor according to the invention is provided.
    • 本发明涉及一种电容式接近传感器,包括:第一传感器电极E1和第二传感器电极E2,用于提供第一和第二电气交变信号的信号发生器E1,E2, - 第一负载元件L,其包括第一和 第二电负载,其中通过第一负载的第一交变信号可以通过第二负载馈送到第一传感器电极和第二交变信号到第二传感器电极,并且其中电负载各自与 在各传感器电极处要测量的电容性负载形成低通滤波器,以及 - 信号处理装置A,其与第一传感器电极和第二传感器电极耦合,并且适于从第一传感器电极形成第一测量值 在第一传感器电极处敲击的第一电参数的推挽部分和在第二传感器电极处敲击的第二电参数。 还提供了一种根据本发明的用于电容式接近传感器的电容近似检测方法。
    • 9. 发明申请
    • CAPACITIVE TOUCH SENSING AND LIGHT EMITTING DIODE DRIVE MATRIX
    • 电容触摸感应和发光二极管驱动矩阵
    • WO2010081069A1
    • 2010-07-15
    • PCT/US2010/020613
    • 2010-01-11
    • MICROCHIP TECHNOLOGY INCORPORATEDLIN, Chien-Yi
    • LIN, Chien-Yi
    • H03K17/96H03K17/955G06F3/044
    • G06F3/044H03K17/955H03K17/9622H03K2217/960725H03K2217/96073H03K2217/960785
    • A pulse is applied through a capacitive touch key sensor to a sampling capacitor of an analog-to-digital converter (ADC). The voltage charge arriving at the sampling capacitor will be maximum when there is substantially no shunt capacitance between the capacitive touch key sensor and the sampling capacitor. However, a object such as an operator's finger when in close proximity to the capacitive touch key sensor will create a shunt to ground capacitance that diverts some of the charge that is supposed to go to the sampling capacitor and thereby reducing the voltage charge on the sampling capacitor. This change in charge voltage when the capacitive touch key sensor is activated (touched) may be easily detected with the ADC. In addition, light emitting diode (LED) displays may be integrated with the capacitive touch key sensors and use the same connections on an integrated circuit device in a time division multiplexed manor.
    • 通过电容式触摸按键传感器将脉冲施加到模数转换器(ADC)的采样电容器。 当电容式触摸按键传感器和采样电容器之间基本上没有分流电容时,到达采样电容器的电压将最大。 然而,当靠近电容式触摸键传感器时诸如操作者的手指的物体将产生分流至接地电容,该电容将转移到假定去往采样电容器的一些电荷,从而降低采样电压 电容。 当电容式触摸按键传感器被激活(触摸)时,充电电压的变化可能会被ADC容易地检测出来。 此外,发光二极管(LED)显示器可以与电容式触摸按键传感器集成,并且在时分复用的庄园中的集成电路装置上使用相同的连接。