Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1989-06-30
1991-02-12
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324 67, 324687, 324690, G01R 2726
Patent
active
049927418
ABSTRACT:
A device for detecting objects behind a wall or like surface has a multiplicity of capacitor plates at spaced intervals and a circuit for sensing alterations in the dielectric constant of a region of the surface being inspected and adjacent to each of the capacitor plates. A multiplicity of quantitative display elements are arranged at intervals in a visual display, and each display element provides a quantitative value representative of the strength of the signal generated by the associated capacitor plate. Thus, the images in the display elements will increase and decrease to reflect the quantitative signals and effectively image the object being detected.
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patent: 4743902 (1988-05-01), Andermo
patent: 4748400 (1988-05-01), Typpo
Douglas Keith
Meyer Mark Q.
Eisenzopf Reinhard J.
Harvey Jack B.
The Stanley Works
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