Title:
1つまたは複数の独立に制御可能な負荷を有する誘導給電型給電システム
Document Type and Number:
Japanese Patent JP2007507991
Kind Code:
A
Abstract:
The present invention provides a system for controlling one or more operating unites in an inductive power transfer (IPT) system. Each operating unit includes a pick-up coil that takes power from a primary conductor or track over an air gap. The operating unit is controlled by frequency modulating the primary conductor power supply to send a control instruction which is decoded by the operating unit. The instruction is decoded by generating a signal using a local oscillator in the operating unit and using the signal to detect changes in the frequency of the current in the primary conductor. Such a system can be used, for example, to control inductively powered road-studs that include a light source for controlling traffic on a roadway. A narrow band modulated data transmission system and method for controlling an operating unit are also provided.
Inventors:
BOYS,John,Talbot
Application Number:
JP2006527936A
Publication Date:
March 29, 2007
Filing Date:
September 29, 2004
Export Citation:
Assignee:
AUCKLAND UNISERVICES LIMITED
International Classes:
H02J17/00; G08G1/07
Domestic Patent References:
| JPH09282429A | 1997-10-31 | |||
| JPS62133829A | 1987-06-17 |
Attorney, Agent or Firm:
Masatake Ide
Akira Nogami
Akira Nogami