Wireless power transfer via electrodynamic coupling

    公开(公告)号:US09866066B2

    公开(公告)日:2018-01-09

    申请号:US13989293

    申请日:2011-08-05

    摘要: Wireless power transmission (WPT) systems are provided. According to an embodiment, the WPT system uses one or more power transmitting coils and a receiver for electromagnetically coupled wireless power transfer. The electrodynamic receiver can be in the form of an electrodynamic transducer where a magnet is allowed to oscillate near a receiving coil to induce a voltage in the receiving coil, a piezoelectric transducer where the magnet causes a vibrating structure with a piezoelectric layer to move, an electrostatic transducer where movement of the magnet causes a capacitor plate to move, or a combination thereof. An alternating magnetic field from the transmitting coil(s) excites the magnet in the receiver into mechanical resonance. The vibrating magnet then functions similar to an energy harvester to induce voltage/current on an internal coil, piezoelectric material, or variable capacitor. Embodiments utilize magnetic coupling and electromechanical resonance for safe, spatially distributed, low-frequency power delivery to portable devices.

    Application using a single photon avalanche diode (SPAD)
    8.
    发明授权
    Application using a single photon avalanche diode (SPAD) 有权
    应用单光子雪崩二极管(SPAD)

    公开(公告)号:US09058081B2

    公开(公告)日:2015-06-16

    申请号:US13242587

    申请日:2011-09-23

    摘要: An electronic device may include a housing having a mousing surface, and a navigation device carried by the housing and comprising a proximity detector. The proximity detector may include a single photon avalanche diode (SPAD) configured to detect movement of an activator adjacent the mousing surface. For example, the proximity detector may detect movement along three axes.

    摘要翻译: 电子设备可以包括具有鼠标表面的壳体和由壳体承载并包括接近检测器的导航装置。 接近检测器可以包括单光子雪崩二极管(SPAD),其被配置为检测邻近鼠标表面的激活器的运动。 例如,接近检测器可以检测沿着三个轴的移动。