Communication system for inductive power transfer system
AssigneeTraffic Electronics, Ltd.
InventorStephen Douglas Tetlow
Life of this patent
Estimating the term…
Abstract
A return communication system and method for an Inductive Power Transfer (IPT) System allows a pick-up device (3) to receive an instruction and supply a load (36) in such a way that a predetermined variation occurs in current in the primary conductive path (2) of the system The variation may be detected and decoded to determine a response from the pick-up to the instruction.
Claims16
A communication method for an IPT system having a primary conductive path capable of being energized by an electric current, and one or more pick-ups adapted to receive electrical energy from the currant in the primary path to supply a load, the method comprising the steps of:
- transmitting an instruction over the primary path to a pick-up;
- the pick-up acting on to the instruction by supplying power to the load to induce a predetermined variation in the current in the primary conductive path;
- detecting the variation in the current in the primary path and using the detected variation to determine a response from the pick-up to the instruction.
An IPT system pick-up including a control means for receiving an instruction transmitted over a primary conductive path of the IPT system and adapted to act on the instruction by supplying power to a load to cause a predetermined variation in the current on the primary conductive path such that the variation may be detected at a remote location on the primary conductive path to determine a response from the pick-up to the instruction.
Communication apparatus for an IPT system, the apparatus comprising:
- a first communication means for communicable connection to the primary conductive path of an IPT system;
- a second communication means provided on a pick-up of the IPT system, the second communication means being capable of receiving an instruction communicated by the first communication means, and control means provided on the pick-up, the control means being adapted to control the supply of power to a load dependant on the second communication means such that a predetermined variation in the current of the primary conductive path occurs which may be detected by the first communication means to determine a response to the instruction.
Dependencies are inferred from the claim text.