INDUCTIVE POWER SUPPLY WITH DEVICE IDENTIFICATION
First Claim
1. An inductive power supply to supply operating wireless power to a remote device, said inductive power supply comprising:
- inductive field generating circuitry;
frequency control circuitry electrically connected to said inductive field generating circuitry, said frequency control circuitry capable of operating said inductive field generating circuitry at an operating frequency;
reflected impedance sensing circuitry to sense a characteristic of power in said inductive power supply;
said characteristic being indicative of a reflected impedance of said remote device;
identification circuitry to determine an identification profile of said remote device as a function of said sensed characteristic of said reflected impedance sensing circuitry, said identification profile including one or more resonant frequencies;
a memory storing a common identification profile of a plurality of known remote devices, wherein said common identification profile includes one or more resonant frequencies; and
power supply control circuitry for supplying operating wireless power to said remote device if said remote device has an identification profile corresponding with said common identification profile.
1 Assignment
0 Petitions
Accused Products
Abstract
An inductive power supply system to identify remote devices using unique identification frequencies. The system includes an AIPS and a tank circuit capable of inductively providing power to a remote device at different frequencies, and a sensor for sensing the reflected impedance of the remote device at tank circuit. The system further includes a plurality of different remote devices, each having a unique resonance frequency. In operation, the AIPS is capable of identifying the type of remote device present in the inductive field by applying power to a remote device at a plurality of unique identification frequencies until the remote device establishes resonance in response to one of the identification frequencies. The AIPS includes a controller that recognizes when resonance has been established by evaluating sensor data, which is representative of the reflected impedance of the remote device. Once the identity of a remote device is determined, the AIPS may pull operating parameters for the remove device from memory to ensure efficient operation and to assist in recognizing fault conditions.
-
Citations
26 Claims
-
1. An inductive power supply to supply operating wireless power to a remote device, said inductive power supply comprising:
-
inductive field generating circuitry; frequency control circuitry electrically connected to said inductive field generating circuitry, said frequency control circuitry capable of operating said inductive field generating circuitry at an operating frequency; reflected impedance sensing circuitry to sense a characteristic of power in said inductive power supply;
said characteristic being indicative of a reflected impedance of said remote device;identification circuitry to determine an identification profile of said remote device as a function of said sensed characteristic of said reflected impedance sensing circuitry, said identification profile including one or more resonant frequencies; a memory storing a common identification profile of a plurality of known remote devices, wherein said common identification profile includes one or more resonant frequencies; and power supply control circuitry for supplying operating wireless power to said remote device if said remote device has an identification profile corresponding with said common identification profile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for controlling an inductive power supply to supply operating wireless power to a remote device, comprising the steps of:
-
determining a common identification profile for a plurality of known remote devices capable of being powered by the inductive power supply, the common identification profile including one or more resonant frequencies; providing the remote device having device circuitry and a secondary configured for receiving the operating wireless power, wherein the operating wireless power is used to operate the device circuitry; applying an inductive field to the remote device at the one or more resonant frequencies of the common identification profile; determining whether the remote device has a resonant frequency profile corresponding with the common identification profile; and operating the inductive power supply to supply operating wireless power to the remote device if the remote device has a resonant frequency profile corresponding to the common identification profile. - View Dependent Claims (11, 12)
-
-
13. A method for operating an inductive power supply to supply power to a remote device comprising the steps of:
-
providing the remote device having device circuitry and a secondary configured for receiving operating wireless power, wherein the operating wireless power is used to operate the device circuitry; storing at least one known identification profile in a memory associated with the inductive power supply; applying inductive power to the remote device at one or more frequencies to determine an identification profile of the remote device contained within the inductive field; comparing the determined identification profile with the at least one stored known identification profile to determine if the determined identification profile corresponds to one or more of the at least one stored identification profile; and operating the inductive power supply to supply the operating wireless power to the remote device based on the determination that said determined identification profile corresponds to one or more of the at least one stored identification profile. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
-
20. An inductive power supply for supplying operating wireless power to a remote device comprising:
-
a driver; a primary circuit having a primary; a sensor in said primary circuit adapted to sense a characteristic of power in said primary circuit indicative of a reflected impedance of said remote device; identification circuitry to determine an identification profile of said remote device as a function of output of said sensor; a memory storing at least one known identification profile; and control circuitry for controlling operation of said inductive power supply to supply said operating wireless power to said remote device if said remote device has an identification profile corresponding with at least one known identification profile. - View Dependent Claims (21, 22, 23, 24, 25, 26)
-
Specification