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    • 8. 发明申请
    • CAPACITANCE TYPE SENSOR
    • 电容式传感器
    • US20130241578A1
    • 2013-09-19
    • US13792987
    • 2013-03-11
    • DENSO CORPORATION
    • Masayoshi SatakeHiroyuki MoriHajime Nakagawa
    • G01R27/26
    • G01R27/2605B60N2/002B60R21/01532H03K17/955H03K2017/9615H03K2217/960765
    • A capacitance type sensor includes a detection electrode, a reference electrode, and a sub-reference electrode for distinguishingly detecting a detection object. The sub-reference electrode has a reference voltage applied thereto and is displaceable relative to the detection electrode due to a pressure exerted from the detection object. A voltage application device applies a detection voltage to form an electric field in a space defined with the reference electrode device. A capacitance detector of the sensor detects a first capacitance and a second capacitance, and a detection unit of the sensor distinguishingly detects the detection object based on the first capacitance and the second capacitance. The first capacitance is measured between the detection electrode and the reference electrode, and the second capacitance is measured between the detection electrode and the sub-reference electrode.
    • 电容式传感器包括检测电极,参考电极和用于区别检测检测对象的子参考电极。 子参考电极具有施加到其上的参考电压,并且由于从检测对象施加的压力而相对于检测电极可移动。 电压施加装置施加检测电压以在由参考电极装置限定的空间中形成电场。 传感器的电容检测器检测第一电容和第二电容,并且传感器的检测单元基于第一电容和第二电容区分检测检测对象。 在检测电极和参考电极之间测量第一电容,并且在检测电极和辅助参考电极之间测量第二电容。
    • 9. 发明授权
    • Touch sensitive electronic switch
    • 触敏电子开关
    • US3879618A
    • 1975-04-22
    • US29741072
    • 1972-10-13
    • MAGIC DOT INC
    • LARSON WILLIS A
    • H03K17/945H03K17/96H01H35/00
    • H03K17/9645H03K17/945H03K2017/9602H03K2017/9615Y10T307/766
    • A touch sensitive electronic switch which has no moving parts and is actuated by the skin resistance of an operator causing a lowering of D.C. resistance across the face of the switch is disclosed. The electronic switch, in the preferred embodiment shown, includes three electrodes laterally spaced and arranged with respect to each other upon an insulator. The second electrode is laterally spaced and insulated from the first electrode and arranged around and about the first electrode with the level of the top surface of the second electrode rising above the level of the top surface of the first electrode. The third electrode is laterally spaced and insulated from both the first and second electrodes to provide a conductive electrical shielding electrode between the first and second electrodes. The first and second electrodes are exposed to the finger of an operator upon the top surface of the insulator in a manner that the operator''s finger bridging between the first and second electrodes allows a direct current path to be set up laterally between the first electrode and the second electrode to thereby provide an activation of the switch through a lowering of the D.C. resistance across the face of the switch. When the operator''s finger is removed, the shielding effect of the third electrode prevents any leakage currents from flowing between the first electrode and the second electrode from establishing such a direct current path. Electronics for use with such an electronic switch and various configurations and relationships of such an electronic switch are further disclosed.
    • 公开了一种触敏电子开关,其不具有运动部件并由操作者的皮肤电阻致动,导致跨开关面的直流电阻降低。 在所示的优选实施例中,电子开关包括横向间隔开并且在绝缘体上相对于彼此布置的三个电极。 第二电极横向间隔开并与第一电极绝缘并且布置在第一电极周围和周围,第二电极的顶表面的高度高于第一电极的顶表面的高度。 第三电极横向间隔开并与第一和第二电极两者绝缘,以在第一和第二电极之间提供导电电屏蔽电极。 第一和第二电极以绝对体的顶表面暴露于操作者的手指,使得操作者的手指在第一和第二电极之间桥接允许在第一电极和第二电极之间横向设置直流通路 从而通过跨越开关的表面的直流电阻的降低来提供开关的激活。 当操作者的手指被移除时,第三电极的屏蔽效果防止在第一电极和第二电极之间的任何泄漏电流流过建立这样的直流路径。 进一步公开了与这种电子开关一起使用的电子设备以及这种电子开关的各种配置和关系。
    • 10. 发明授权
    • Electronic keyboard
    • 电子键盘
    • US3691555A
    • 1972-09-12
    • US3691555D
    • 1970-03-30
    • BURROUGHS CORP
    • LOOSCHEN FLOYD W
    • B41J5/10H03K17/96
    • B41J5/105H03K17/9622H03K2017/9613H03K2017/9615
    • An all-electronic keyboard avoiding mechanical motion of keys, and particularly suitable for digital computer input is described. The keyboard has a matrix of keys located at intersections of columns and rows and electronic oscillations are established in circuits including keys of the keyboard. When an individual key is contacted manually, the change in capacitance detunes the oscillating circuit in the column and row in which the selected key lies. Electronic sensors and decoders note the column and row involved and provide a signal unique to the key touched. In one embodiment a separate oscillator is employed for each line of the matrix, and in another embodiment a single oscillator is employed for the entire matrix. Geometrical arrangements of conductors on individual keys are described with the branches of forked conductors interlaced for capacitive coupling. In one embodiment an additional conductor is sinuously interposed between branches of a pair of forked conductors.
    • 描述了避免键的机械运动,特别适用于数字计算机输入的全电子键盘。 键盘具有位于列和行的交点处的键矩阵,并且在包括键盘的键的电路中建立电子振荡。 当手动联系一个单独的键时,电容的变化会使所选键所在的列和行中的振荡电路失谐。 电子传感器和解码器注意到所涉及的列和行,并提供了所触摸的键所独有的信号。 在一个实施例中,对矩阵的每一行使用单独的振荡器,在另一个实施例中,整个矩阵采用单个振荡器。 用各个键的导体的几何布置描述了用于电容耦合隔行的叉形导体的分支。 在一个实施例中,附加导体被切向插入在一对分叉导体的分支之间。