Multi-channel capacitive sensor device and portable electronic device including same

• Main Authors: ROAISSIA CHAOUKI, MONNEY PATRICK
• Format: Patent
• Language: Chinese; English
• Published: 04.10.2022
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

A multi-channel capacitive sensor device and a portable electronic device including the same are disclosed. A capacitive sensor having a plurality of sense inputs connectable to a capacitive sense electrode and a common reference input, each sense input and reference input may be placed in a measurement state, a ground state, or a shielded state. The sensor may be equipped with an external reference capacitor between each sensing input and a common reference terminal. The reference capacitors may be read individually by selectively pulling one of the input terminals to ground and driving the other to be equipotential with the reference input. 公开了多通道电容传感器装置和包括该装置的便携式电子装置。一种具有多个感测输入和公共参考输入的电容传感器，所述多个感测输入可连接到电容感测电极，每个感测输入和参考输入可以被置于测量状态、接地状态或屏蔽状态。传感器可以被装备有在每个感测输入和公共参考端子之间的外部参考电容器。可以通过选择性地将输入端子之一拉到接地并且将其它的驱动为与参考输入等电位来单独地读取参考电容器。