The present disclosure describes techniques for detecting foreign objects. In some aspects, an apparatus for detecting objects is provided. The apparatus includes a plurality of sense circuits, each of the plurality of sense circuits including a primary sense coil having a first terminal and a second terminal, a secondary sense coil having a first terminal and a second terminal, and a capacitor having a first terminal and a second terminal. The first terminal of the capacitor is electrically connected to the second terminals of each of the primary sense coil and the secondary sense coil. The apparatus further includes a driver circuit electrically connected to the first terminal of the primary sense coil of each of the plurality of sense circuits. The apparatus further includes a measurement circuit electrically connected to the first terminal of the secondary sense coil of each of the plurality of sense circuits.
本公开描述了用于检测异物的技术。在一些方面,提供了一种用于检测对象的装置。该装置包括多个感测电路,多个感测电路中的每个感测电路包括:初级感测线圈,具有第一端子和第二端子;次级感测线圈,具有第一端子和第二端子;以及电容器,具有第一端子和第二端子。电容器的第一端子被电连接到初级感测线圈和次级感测线圈中的每个感测线圈的第二端子。该装置还包括驱动器电路,驱动器电路被电连接到多个感测电路中的每个感测电路的初级感测线圈的第一端子驱动器电路。该装置还包括测量电路,测量电路被电连接到多个感测电路中的每个感测电路的次级感测线圈的第一端子。
FOREIGN OBJECT DETECTION CIRCUIT USING MUTUAL IMPEDANCE SENSING
使用互阻抗感测的异物检测电路
2021-09-28
Patent
Electronic Resource
Chinese
IPC: | G01V Geophysik , GEOPHYSICS / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
FOREIGN OBJECT DETECTION CIRCUIT USING MUTUAL IMPEDANCE SENSING
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