×

Electrical impedance tomography

  • US 5,807,251 A
  • Filed: 08/26/1996
  • Issued: 09/15/1998
  • Est. Priority Date: 03/11/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of obtaining a representation of the distribution of electrical impedance within material contained within a containing wall, the method comprising:

  • providing a plurality of mutually spaced electrodes mounted at spaced locations of the wall, the electrodes being electrically insulated from one another and arranged to be in electrical contact with material contained within the wall;

    applying, between an electrical reference ground and each electrode, sequentially, an input electrical signal which, while applied to any one of the electrodes, causes respective output electrical signals to be generated between the electrical reference ground and each other one of the electrodes;

    measuring said output electrical signals generated between the electrical reference ground and each other one of the electrodes; and

    processing the resulting measured data to provide a representation of the distribution, within said material, of its electrical impedance.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×