System and method of visualizing capacitance sensing system operation
    11.
    发明授权
    System and method of visualizing capacitance sensing system operation 有权
    可视化电容感应系统运行的系统和方法

    公开(公告)号:US09367166B1

    公开(公告)日:2016-06-14

    申请号:US12004831

    申请日:2007-12-21

    申请人: Viktor Kremin

    发明人: Viktor Kremin

    IPC分类号: G06F3/041 G06F3/0354

    摘要: Systems and methods of visualizing capacitance sensing system operation. A graphical user interface for visualizing capacitance sensing system operation includes a first window. The window includes a representation of a physical layout of a plurality of sensor devices on a target apparatus. The graphical user interface is operable to accept input from a pointing device to select a selected sensor from the plurality of sensor devices. A second window is for displaying capacitive sensing data of the selected sensor.

    摘要翻译: 可视化电容感测系统操作的系统和方法。 用于可视化电容感测系统操作的图形用户界面包括第一窗口。 窗口包括目标设备上的多个传感器设备的物理布局的表示。 图形用户界面可操作以接受来自指示设备的输入以从多个传感器设备中选择所选择的传感器。 第二窗口用于显示所选传感器的电容感测数据。

    Capacitance to code converter with sigma-delta modulator
    12.
    发明授权
    Capacitance to code converter with sigma-delta modulator 有权
    具有Σ-Δ调制器的电容到码转换器

    公开(公告)号:US09154160B2

    公开(公告)日:2015-10-06

    申请号:US13049798

    申请日:2011-03-16

    申请人: Viktor Kremin

    发明人: Viktor Kremin

    IPC分类号: G01R5/24 H03M11/02 G06F3/044

    摘要: An apparatus and method of converting a capacitance measured on a sensor element to a digital value. The apparatus may include a switching capacitor as a sensor element, a modulation circuit coupled to the sensor element, and a switching circuit having a plurality of switches controlled by a variable-period clock. The modulation circuit is configured to measure a capacitance on the sense element and to convert the measured capacitance to a digital value.

    摘要翻译: 将在传感器元件上测量的电容转换为数字值的装置和方法。 该装置可以包括作为传感器元件的开关电容器,耦合到传感器元件的调制电路和具有由可变周期时钟控制的多个开关的开关电路。 调制电路被配置为测量感测元件上的电容并将测量的电容转换为数字值。

    Receive demodulator for capacitive sensing
    13.
    发明授权
    Receive demodulator for capacitive sensing 有权
    接收电容式感应解调器

    公开(公告)号:US08575947B1

    公开(公告)日:2013-11-05

    申请号:US13739991

    申请日:2013-01-11

    IPC分类号: G01R27/26

    摘要: A first integration capacitor stores charge from a positive signal portion. A second integration capacitor stores charge from negative signal portion. The voltage across the first and second integration capacitors is measured differentially. The presence of a conductive object proximate to a capacitance sensing element is detected based on the measured differential voltage between the first and second integration capacitors.

    摘要翻译: 第一积分电容器从正信号部分存储电荷。 第二积分电容器从负信号部分存储电荷。 差分地测量第一和第二积分电容器两端的电压。 基于所测量的第一和第二积分电容器之间的差分电压来检测靠近电容感测元件的导电物体的存在。

    Capacitance to code converter with sigma-delta modulator
    16.
    发明申请
    Capacitance to code converter with sigma-delta modulator 有权
    具有Σ-Δ调制器的电容到码转换器

    公开(公告)号:US20080111714A1

    公开(公告)日:2008-05-15

    申请号:US11600255

    申请日:2006-11-14

    申请人: Viktor Kremin

    发明人: Viktor Kremin

    IPC分类号: H03K17/96

    摘要: An apparatus and method for converting a capacitance measured on a sensor element to a digital code. The apparatus may include a switching capacitor as a sensor element of a sensing device, and a sigma-delta modulator coupled to the sensor element to convert a capacitance measured on the sensor element to a digital code. The switching capacitor is in a feedback loop of the sigma-delta modulator. The method may include measuring a capacitance on a sensor element of a sensing device using a sigma-delta modulator, and converting the capacitance measured on the sensor element to a digital code.

    摘要翻译: 一种用于将在传感器元件上测量的电容转换为数字码的装置和方法。 该装置可以包括作为感测装置的传感器元件的开关电容器和耦合到传感器元件的Σ-Δ调制器,以将在传感器元件上测量的电容转换为数字代码。 开关电容器处于Σ-Δ调制器的反馈回路中。 该方法可以包括使用Σ-Δ调制器测量感测装置的传感器元件上的电容,以及将在传感器元件上测量的电容转换为数字代码。

    Compensation circuit for a TX-RX capacitive sensor
    17.
    发明授权
    Compensation circuit for a TX-RX capacitive sensor 有权
    TX-RX电容式传感器的补偿电路

    公开(公告)号:US08890547B2

    公开(公告)日:2014-11-18

    申请号:US13345504

    申请日:2012-01-06

    IPC分类号: G06F3/044 G01R27/26

    CPC分类号: G01R27/2605 G06F3/044

    摘要: A capacitive sensor may include a transmit electrode and a receive electrode capacitively coupled with the transmit electrode. A capacitance sensing circuit senses a capacitance between the transmit and receive electrodes by applying a signal to the transmit electrode and rectifying a signal induced at the receive electrode. A compensation circuit reduces the effect of a mutual and parasitic capacitances of the transmit and receive electrode pair by adding a compensation signal to the rectified signal.

    摘要翻译: 电容传感器可以包括发射电极和与发射电极电容耦合的接收电极。 电容感测电路通过向发射电极施加信号并整流在接收电极处感应的信号来感测发射电极和接收电极之间的电容。 补偿电路通过向整流信号添加补偿信号来减小发射和接收电极对的相互和寄生电容的影响。

    Capacitance to code converter with sigma-delta modulator
    18.
    发明授权
    Capacitance to code converter with sigma-delta modulator 有权
    具有Σ-Δ调制器的电容到码转换器

    公开(公告)号:US08547114B2

    公开(公告)日:2013-10-01

    申请号:US11600255

    申请日:2006-11-14

    申请人: Viktor Kremin

    发明人: Viktor Kremin

    IPC分类号: G01R27/26

    摘要: An apparatus and method for converting a capacitance measured on a sensor element to a digital code. The apparatus may include a switching capacitor as a sensor element of a sensing device, and a sigma-delta modulator coupled to the sensor element to convert a capacitance measured on the sensor element to a digital code. The switching capacitor is in a feedback loop of the sigma-delta modulator. The method may include measuring a capacitance on a sensor element of a sensing device using a sigma-delta modulator, and converting the capacitance measured on the sensor element to a digital code.

    摘要翻译: 一种用于将在传感器元件上测量的电容转换为数字码的装置和方法。 该装置可以包括作为感测装置的传感器元件的开关电容器和耦合到传感器元件的Σ-Δ调制器,以将在传感器元件上测量的电容转换为数字代码。 开关电容器处于Σ-Δ调制器的反馈回路中。 该方法可以包括使用Σ-Δ调制器测量感测装置的传感器元件上的电容,以及将在传感器元件上测量的电容转换为数字代码。

    Capacitance to frequency converter
    19.
    发明授权
    Capacitance to frequency converter 有权
    变频器电容

    公开(公告)号:US08536902B1

    公开(公告)日:2013-09-17

    申请号:US13301764

    申请日:2011-11-21

    IPC分类号: H03C3/00

    摘要: A capacitance to frequency converter includes a switching capacitor circuit, a charge dissipation circuit, a comparator, and a signal generator. The switching capacitor circuit charges a sensing capacitor and transfers charge from the sensing capacitor to a circuit node of the charge dissipation circuit. The comparator is coupled to the charge dissipation circuit to compare a potential at the circuit node to a reference voltage. The signal generator is coupled to an output of the comparator and to the charge dissipation circuit. The signal generator is responsive to the output of the comparator to generate a signal fed back to control the charge dissipation circuit. A frequency of the signal is proportional to a capacitance of the sensing capacitor.

    摘要翻译: 电容变频器包括开关电容器电路,电荷耗散电路,比较器和信号发生器。 开关电容器电路对感测电容器充电,并将电荷从感测电容器传送到电荷耗散电路的电路节点。 比较器耦合到电荷耗散电路以将电路节点处的电位与参考电压进行比较。 信号发生器耦合到比较器的输出端和电荷耗散电路。 信号发生器响应比较器的输出以产生反馈信号以控制电荷耗散电路。 信号的频率与感测电容器的电容成正比。

    Discerning between substances
    20.
    发明授权
    Discerning between substances 有权
    辨别物质

    公开(公告)号:US08245579B2

    公开(公告)日:2012-08-21

    申请号:US12262640

    申请日:2008-10-31

    IPC分类号: G01B7/16

    CPC分类号: G01D5/2405 H03K17/962

    摘要: A method and apparatus to detect the presence of a material at a sensing device and to determine whether the material is a first material having a first material property or a second material having a second material property.

    摘要翻译: 一种在感测装置处检测材料的存在并确定材料是否是具有第一材料性质的第一材料或具有第二材料性质的第二材料的方法和装置。