SYSTEMS, METHODS, AND APPARATUS FOR DETECTION OF METAL OBJECTS IN A PREDETERMINED SPACE
First Claim
1. An apparatus for detecting a presence of an object in a magnetic field, the apparatus comprising:
- a power circuit configured to generate the magnetic field and transfer power wirelessly at a level sufficient to power or charge a load via the magnetic field; and
a detection circuit configured to transmit signals and detect, based on a reflection of the transmitted signals, a frequency of vibration of the object caused by the magnetic field.
2 Assignments
0 Petitions
Accused Products
Abstract
This disclosure provides systems, methods and apparatus for detecting foreign objects. In one aspect an apparatus for detecting a presence of an object in a magnetic field is provided. The apparatus includes a power circuit configured to generate the magnetic field and transfer power wirelessly at a level sufficient to power or charge a load via the magnetic field. The apparatus further includes a detection circuit configured to transmit signals and detect, based on a reflection of the transmitted signals, a frequency of vibration of the object caused by the magnetic field.
-
Citations
29 Claims
-
1. An apparatus for detecting a presence of an object in a magnetic field, the apparatus comprising:
-
a power circuit configured to generate the magnetic field and transfer power wirelessly at a level sufficient to power or charge a load via the magnetic field; and a detection circuit configured to transmit signals and detect, based on a reflection of the transmitted signals, a frequency of vibration of the object caused by the magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 18, 19, 20)
-
-
12. A method for detecting a presence of an object in a magnetic field, the method comprising:
-
generating the magnetic field and transferring power wirelessly at a level sufficient to power or charge a load via the magnetic field; and transmitting signals and detecting, based on a reflection of the transmitted signals, a frequency of vibration of the object caused by the magnetic field. - View Dependent Claims (13, 14, 15, 16, 17)
-
-
21. An apparatus for detecting a presence of an object in a magnetic field, the apparatus comprising:
-
means for generating the magnetic field and transferring power wirelessly at a level sufficient to power or charge a load via the magnetic field; and means for transmitting signals and means for detecting, based on a reflection of the transmitted signals, a frequency of vibration of the object caused by the magnetic field. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
-
Specification