Patents by Inventor Katsuhisa Yoshimoto

Katsuhisa Yoshimoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for estimating power consumption of electric apparatus, and abnormality alarm system utilizing the same
    Patent number: 6816078
    Abstract: A method and a system for estimating electricity consumption of electric appliances and an abnormality alarm system, enabling estimation of individual electricity consumption of electric appliances in operation in a building or the like by a non-intrusive method, and comprising a measuring sensor (11), data extracting means (12), and estimating means (13) such as an LMC. The estimating means (13) learns based on a training set in advance, and is able to estimate individual electricity consumption of electric appliances in operation. Fundamental and higher harmonics of total load current and their phase differences from voltage are obtained by the data extracting means (12) from measurement data VA, VB, IA, IB detected by an instrument transformer (111) and an instrument current transformer (112) provided in the vicinity of a service entrance 6 of a feeder 4 to a user 2. They are inputted to the estimating means (13) as inputs, thereby estimating individual electricity consumption of the electric appliances.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: November 9, 2004
    Assignee: Central Research Institute of Electric Power Industry
    Inventors: Takashi Onoda, Yukio Nakano, Katsuhisa Yoshimoto
  • System and method for estimating power consumption of electric apparatus, and abnormality alarm system utilizing the same
    Publication number: 20030093390
    Abstract: A method and a system for estimating electricity consumption of electric appliances and an abnormality alarm system, enabling estimation of individual electricity consumption of electric appliances in operation in a building or the like by a non-intrusive method, and comprising a measuring sensor (11), data extracting means (12), and estimating means (13) such as an LMC. The estimating means (13) learns based on a training set in advance, and is able to estimate individual electricity consumption of electric appliances in operation. Fundamental and higher harmonics of total load current and their phase differences from voltage are obtained by the data extracting means (12) from measurement data VA, VB, IA, IB detected by an instrument transformer (111) and an instrument current transformer (112) provided in the vicinity of a service entrance 6 of a feeder 4 to a user 2. They are inputted to the estimating means (13) as inputs, thereby estimating individual electricity consumption of the electric appliances.
    Type: Application
    Filed: October 8, 2002
    Publication date: May 15, 2003
    Inventors: Takashi Onoda, Yukio Nakano, Katsuhisa Yoshimoto